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July 2013 General Discussion


Chicago Storm

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MOS has DTW in the mid to upper 50s. It would be nice if the radiational cooling could overpower the uhi for a change, because July 24th is the warmest record low of the entire year for Detroit. Current record is 52F set in 1974.

 

Record low here (UGN) is 49°, 2000. If the winds aren't offshore I can forget about anything close to the record. 48° would be a shock to the system! lol

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Will be nice to open the windows.

 

2013 continues to be just a bit different than 2012.

 

LAF 90º+ days, through July 22:

2012: 34 days (5 days of 100º+)

2013: 5 days

 

IND 90º+ days, through July 22:

2012: 35 days (5 days of 100º+)

2013: 4 days

 

I like this version better.

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Record low at LAF for July 25 is 55...one of the warmer ones for late July. I think we will beat that. Record for the 24th is 53...that one could be in some jeopardy. COOP records (longer time period) for these dates are upper 40s so this is one of the cooler airmasses for this time of year.

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Record low at LAF for July 25 is 55...one of the warmer ones for late July. I think we will beat that. Record for the 24th is 53...that one could be in some jeopardy. COOP records (longer time period) for these dates are upper 40s so this is one of the cooler airmasses for this time of year.

 

FWIW, 12z MEX has 52º for tomorrow and 53º for the 25th. MAV the same and MET reversed with a 53º and 52º. Pretty solid agreement.

 

IND overachieving today and hit 90º. Makes for the 5th one of the year.

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Winds have really picked up over the last few hours, most locations gusting over 20mph near the lake.

 

Definitely had some decent gusts today here. Upper 20 mph range.

 

High 74° today. Down to 63° now.

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Some legit waves on Lake Michigan for July. Winds have been gusting near 40mph over the southern part of the lake.

 

 

 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
936 PM CDT TUE JUL 23 2013 /1036 PM EDT TUE JUL 23 2013/

...UNSEASONABLY HIGH WAVES RECORDED ACROSS SOUTHERN LAKE
MICHIGAN ON TUESDAY AFTERNOON AND NIGHT...

THE STRONG COLD FRONT WHICH HAD MOVED ACROSS THE REGION EARLY ON
TUESDAY BROUGHT A MORE TYPICAL AUTUMN PATTERN THAN THAT OF JULY
ACROSS LAKE MICHIGAN. PERSISTENT STRONG NORTHERLY WINDS DOWN THE
FETCH OF THE LAKE LED TO IMPRESSIVELY HIGH WAVES. AS OF 9 PM
TUESDAY EVENING...THIS INCLUDED WAVE HEIGHTS OF 7.9 FT AT THE
SOUTH BUOY AND 14.1 FT AT THE BUOY NORTH OF MICHIGAN CITY INDIANA.

THE LAKE MICHIGAN SOUTHERN BUOY HAS A FAIRLY INTACT PERIOD OF
RECORD DATING BACK TO 1981 OFFERING THE OPPORTUNITY TO SEE HOW
REMARKABLE THESE WAVE HEIGHTS ARE FOR SUMMERTIME.

PRIOR TO TODAY...THERE HAD ONLY BEEN TEN OTHER HOURLY
OBSERVATIONS DURING THE MONTH OF JULY WITH WAVE HEIGHTS AT OR
ABOVE 7.9 FT AT THE SOUTH BUOY. LOOKING AT METEOROLOGICAL SUMMER
/JUNE-AUGUST/...THERE HAD ONLY BEEN 78 HOURLY OBSERVATIONS OF WAVE
HEIGHTS OF 7.9 FT OR HIGHER. THAT IS ONLY 0.001 PERCENT OF ALL
SUMMERTIME OBSERVATIONS AT THAT BUOY!

ITS INTERESTING TO NOTE THAT NORTH WINDS SUCH AS SEEN ON TUESDAY
ARE ALMOST ALWAYS THE CULPRIT TO HIGH WINDS OVER THE LAKE...EVEN
IN THE SUMMERTIME. IN ALL THE SUMMERTIME INSTANCES OF WAVES AT OR
ABOVE 7.9 FT AT THE SOUTH BUOY...THE WIND DIRECTION WAS
NORTHWEST...NORTH...OR NORTHEAST ON ALL BUT TWO OF THE HOURLY
OBSERVATIONS.

THE HIGHEST JULY WAVE HEIGHT OBSERVATION ON RECORD AT THE SOUTH
BUOY IS 9.2 FT ON JULY 21 1981 WHICH THIS EVENT WILL END UP AT
LEAST CLOSE TO. IN THE SUMMER MONTHS...THE HIGHEST WAVE
OBSERVATION ON RECORD IS 11.6 FT ON AUGUST 14TH 1999.

THIS INFORMATION MAY BE UPDATED EARLY WEDNESDAY TO ACCOUNT FOR
THE MAXIMUM WAVE HEIGHT REACHED AT THE SOUTH BUOY.
 
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Still a light breeze outside, 61° at the 10 pm obs.

 

NAM hires showing widespread readings between 45-55° across the subforum tonight. Pretty chilly in central MI!

 

temp11.gif

I think tomorrow night ends up the colder of the two nights for us along the lake. Also wouldn't be surprised if places along the lake don't make it out of the 60's tomorrow.

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I think tomorrow night ends up the colder of the two nights for us along the lake. Also wouldn't be surprised if places along the lake don't make it out of the 60's tomorrow.

 

Interesting wave stats above. This is quite unusual for late July. The colder than normal Arctic may be having some effect on the pattern.

 

Pretty cool watching the clouds blow in off the lake with the moon coming up.

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